OVERVIEW

PACOFLEX™ ULTRA is the ultimate conformable release film for scrap-free applications for the lamination of cover layers and flexible circuits. It is fine-tuned to reduce excessive “squeeze-out” of adhesive into pad areas and will also effectively block adhesive or resin flow into any other unwanted areas.

When exposed to heat and pressure, PACOFLEX™ ULTRA softens into the PACOPAD™ and together they become dynamic “z-axis conformable drivers” which provide superior sidewall conformance with the circuitized base laminate and other intricate flex part topographies.

PACOFLEX™ ULTRA is a two-ply polymeric structure, engineered to a 0.006” (156 μ) thickness. The conformable, quick and easy releasable, “functional“ side of the product [see Figure 1] has a matte appearance and is opaque and should be placed adjacent to the Circuit. The other side, which is placed against a PACOPAD™ conformable driver sheet, is easily distinguishable from its opposite side because it is glossy and non-releasable.

PACOFLEX™ ULTRA used together with PACOPADS™ Pressure Diffuser Pads, delivers unmatched Z-Axis pressure equalization. These two companion products provide simultaneous micro & macro conformance and stabilize all the flexible components permitting reductions in Hydraulic force by ≥30%. Pacopads compensate for uneven internal press pressure imposed upon the work.

RECOMMENDED LAMINATION LAY-UP

FOR LAMINATION OF COVERLAYS AND FLEXIBLE CIRCUITS

37 East Street, Winchester, MA 01890Phone: 781-729-0927 Fax: 781-729-0929 email: sales@pacothane.com web: www.pacothane.com

PRODUCT INFORMATION BULLETIN

LAMINATION PROCESS ADVANTAGES

• Elimination of Entrapped Air Between Cover-Layer and Circuitized Base- PACOFLEX™ ULTRA delivers discreet hydraulic force to reliably drive the Cover-Layer into complete sidewall conformance with the circuitized base laminate

• Finite Control of Adhesive Flow- Due to the optimized, robust smooth surface and superior conformability, PACOFLEX™ ULTRA dams back acrylic and epoxy adhesives from flowing into Cover-Layer clearance areas

• Quick, Easy, Contaminate-Free Release- The opaque, non-contaminating, releasable side of PACOFLEX™ ULTRA is placed adjacent to the surface of the Cover Layer Circuit; leaving the glossy side to be positioned adjacent to the PACOPADS™ side in the make-up. This combination offers maximum “Z-Axis” pressure equalization and a more robust conformable make-up system

• Reduces Mechanical Distortion and Defects- PACOFLEX™ ULTRA “locks-in” around the flexible components to minimize distortion due to Heat and Pressure. Our “ULTRA” Film conforms closely to the part’s surface without excessive flow-out from the sheet. Because of the reduced pressure regime possible with our conformable “system”, Deformed Circuits, Crushed Pads, and Glossy Pressure Spots are eliminated, resulting in repeatable Pad Registration

Pressure Load

Separator Plate

PACOTHANE® HT1500 Release Film

PACOPADS™

PACOFLEX® ULTRA(gloss side up, matte down)

Kapton® & Adhesive

Printed Circuit Board

Kapton® & Adhesive

PACOFLEX® ULTRA(gloss side down, matte up)

PACOPADS™

PACOTHANE® HT1500 Release Film

Separator Plate

PTH

FOR LAMINATION OF COVERLAYS AND FLEXIBLE CIRCUITS

FEATURES

• “Matte” side releasable! No out-gassing or contaminant transfer that will affect solder adhesion

• Engineered conformance layer that prevents uncontrolled “squeeze-out” and meets Mil and IPC Specs

• “Ultra smooth” surface finish for superior adhesive flow control

• Extremely low X-Y axis movement• Clean, inert with no out-gassing of contaminants or solvents

harmful to vacuum systems• Operating temperature to 425°F (218°C) with reduced ram

pressures• Environmentally friendly with no ozone-depleting chemicals or

flourines. Suitable for incinerator or landfill disposal!• Proven line of Pacothane® products sold worldwide since

1985

AVAILABILITY

PACOFLEX™ ULTRA is available in custom-made sheet sizes, tooled to customer specifications. The complete line of Pacothane Technologies products is available from leading local Distributors Worldwide who offer “Just in Time” delivery from locally-available stocks.

D I S T R I B U T E D W O R L D W I D E .

RELEASE PRODUCTS

PRESS PADS

CONFORMABLES

CONTAMINATION CONTROL

ULTRA HIGH TEMPERATURE

Also from Pacothane® Technologies:

REPRESENTED BY:

PRODUCT INFORMATION BULLETIN

Information contained in this technical literature is believed to be accurate and is offered in good faith for the benefit of the consumer. Inasmuch as Pacothane® Technologies has no control over the use to which others may put the material, it does not guarantee that the same results as those described herein will be obtained. Each user of the material should make his own tests to determine the material’s suitability for his own particular use. Statements concerning possible or suggested uses of the materials described herein are not to be construed as constituting a license under any Pacothane® Technologies patent or application covering such use or as recommendations for use of such materials in the infringement of any patent.